no mailbox list when changing mailboxes

[Chung, Ha-Nyung]

 In index, press "c" to open other mailboxes and "?" for
 list. But no mailboxes are shown in mailboxes dialog(?).
 With the same configuration files, before works mutt
 correctly. but from oneday, listing mailboxes doesn't
 work, at least it seems to do so.

 mailbox type is Maildir and I use qmail.
-- 
 Ha-Nyung Chung <[EMAIL PROTECTED]>